<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .a {
            width: 100px;
            height: 100px;
            background-color: red;
            transition: all .5s  cubic-bezier(.79,0,1,.7);
        }

        .a:hover {
            width: 200px;
            height: 200px;
            background-color: pink;
        }
        .t {
            -webkit-column-count: 3;
            column-gap: 40px;
            column-rule:2px solid skyblue;
            column-width: 40px;
        }
    </style>
</head>
<body>
<div class="t">
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</div>
<div class="a"></div>
</body>
</html>